USA: 877.379.8723 | Intl: +1 865.379.8723

FREE GRIB Files from GMN Marine Weather Services

GMN GRIB CoverageGlobal Marine Networks (GMN), the leader in marine weather services, now offers 7 day wind forecasts of the world as a free public service via its GRIB Mail Robot. These forecasts are generated daily at 0015, 0615, 1215, 1815 GMT for every region of the world. GRIB forecasts are based on the National Weather Service, NOAA, Wave Watch III model yielding highly accurate forecasts every 6 hours for up to 7 days into the future. All GRIB forecasts are available via download or delivered by e-mail and optimized specifically for low bandwidth wireless connections.

The GRIB files provided here are derived from the NOAA MMAB Operational Wave Model (wwave3) which is considered to be the best model available for computer generated ocean surface weather forecasts. The user assumes any and all risk associated with the use of these GRIB files.

You must have a way to view these GRIB files. We recommend PredictWind for viewing GRIB files.

Please note: there is no free technical support provided for Free GRIB files.

BRAND NEW: XGate Satellite Data Now Offers FREE PredictWind Service for GRIB Weather Downloads and An Integrated GRIB Viewer At No Extra Cost

Now, with just a few clicks, XGate users can easily see weather forecast visualizations so they can make critical decisions based on weather patterns, and be confident on the water or in remote areas.

XGate complete offshore weather with PredictWind

Learn More About XGate


FREE GRIB File Instructions via Email

Please read Free GRIB File Instructions for complete information on receiving GMN’s Free GRIB weather files via e-mail. Email for information and instructions on how to receive Free GRIB forecasts by email.

If you will be requesting these files by email over a satellite connection, we recommend you use GMN’s XGate Wireless Email Solution. With its compression technology and mid-file restart you will realize significant airtime savings.

GRIB File Weather Forecasting

Need to know more about weather forecasting with GRIB files? Check out Chris Parker’s Coastal and Offshore Weather, the Essential Handbook

If you are unfamiliar with GRIB, read What’s a GRIB a short story on GRIB files.

NEW! 3 Minute Audio How to Download Free Grib Files with an iPod App over Iridium Satellite Phones. Click Here to listen now.

Did you know that GRIB file transfers cost pennies (or less) over broadband? Check out our free guide to satellite broadband to learn more.

Download FREE GRIB Files

The following is a list of supported regions. Click on the KEY to download a compressed 7 day wind forecast for the selected region. NOTE: Internet Explorer users will need to right click the appropriate link and select “Save Target As..” to download the file.

To view GRIB files you will need the following:

  • A program to uncompress the GRIB files (they are in bzip2 format).
  • A GRIB viewer – visit our downloads page for GRIB viewer options.


[wind][wave] PacificPacific Region Forecast Data (includes Gulf of Alaska data)
[wind][wave] AtlanticWest Atlantic (US) Region Forecast Data
[wind][wave] CanadaEast Canada Region Forecast Data
[wind][wave] CaribbeanCaribbean Basin and Gulf of Mexico Forecast Data
[wind][wave] Drake PassageDrake Passage Region Forecast Data
[wind][wave] East AtlanticEast Atlantic Region Forecast Data
[wind][wave] Great LakesGreat Lakes Region Forecast Data
[wind][wave] Northern EuropeNorthern Europe Region Forecast Data
[wind][wave] ArgentinaArgentina, Chile Region Forecast Data
[wind][wave] South AfricaSouth Africa Region Forecast Data
[wind][wave] New ZealandNew Zealand Region Forecast Data
[wind][wave] MediterraneanMediterranean Region Forecast Data
[wind][wave] ScandinaviaScandinavian Region Forecast Data
[wind][wave] BarentsBarents Region Forecast Data
[wind][wave] Baffin BayBaffin Bay Forecast Data
[wind][wave] West AlaskaWest Alaska Region Forecast Data
[wind][wave] VancouverVancouver Region Forecast Data
[wind][wave] Central North PacificCentral North Pacific Region Forecast Data
[wind][wave] Central South PacificCentral South Pacific Region Forecast Data
[wind][wave] Central PacificCentral Pacific Region Forecast Data
[wind][wave] West PacificWest Pacific Region Forecast Data
[wind][wave] Chile, PeruChile, Peru Region Forecast Data
[wind][wave] Central AmericaCentral America Region Forecast Data
[wind][wave] South AtlanticSouth Atlantic Region Forecast Data
[wind][wave] Central AtlanticCentral Atlantic Region Forecast Data
[wind][wave] MadagascarMadagascar Region Forecast Data
[wind][wave] Indian OceanIndian Ocean Forecast Data
[wind][wave] North Indian OceanNorth Indian Ocean Forecast Data
[wind][wave] KergelenKergelen Region Forecast Data
[wind][wave] South AustraliaSouth Australia Region Forecast Data
[wind][wave] Indonesia, AustraliaIndonesia, Australia Region Forecast Data
[wind][wave] Indonesia, New ZealandIndonesia, New Zealand Region Forecast Data
[wind][wave] North JapanNorth Japan Region Forecast Data
[wind][wave] Tasman SeaTasman Sea 30-50S, 140-180E
[wind][wave] Daimler-ChryslerDaimler-Chrysler 60-10N, 75-0W
[wind][wave] CapeTown-RioCapeTown-Rio 20-30S, 48W-25E
[wind][wave] Sydney-HobartSydney-Hobart 2-44S, 146-155E
[wind][wave] Newport-BermudaNewport-Bermuda 42-32N, 74-64W

NEW! 3 Minute Audio How to Download Free Grib Files with an iPod App over Iridium Satellite Phones. Click Here to listen now.

New! 3 Minute Audio Download
How to Download Free GRIB Files with an iPod App Over Iridium Satellite Phones

Free GRIB File Instructions
Free GRIB Files

Learn More…
GMN Favorite Marine WX Package
GMN Full Marine WX Package
Coastal and Offshore Weather, the Essential Handbook

Related Blog Posts
HF Radio vs Satellite Phones: What is Really Free?
7 Steps to Get Satellite Email and GRIB Files on iPad or Android
Success Using Optimizer Plus Iridium for Email and Weather at Sea
Android Email and Web via Satellite Phone with XGate

Optimizer WiFi Hotspot

Iridium AxcessPoint vs. Optimizer

Web Design Syracuse